Signal passed at danger

Two-aspect signal at danger (stop) in the United Kingdom

A signal passed at danger (SPAD)[1]: 75  is an event on a railway where a train passes a stop signal without authority.[2] This is also known as running a red, in the United States as a stop signal overrun (SSO)[3] and in Canada as passing a stop signal.[4] SPAD is defined by Directive 2014/88/EU as any occasion when any part of a train proceeds beyond its authorised movement.[5] Unauthorised movement means to pass:[5]

  • a trackside colour light signal or semaphore at danger, or an order to STOP where a Train Protection system (TPS) is not operational,
  • the end of a safety related movement authority provided in a TPS,
  • a point communicated by verbal or written authorisation laid down in regulations,
  • stop boards (buffer stops are not included) or hand signals.
  1. ^ "Canadian Rail Operating Rules" (PDF). Transport Canada. 24 April 2020. Retrieved 18 May 2021.
  2. ^ "Signals Passed at Danger". ORR.gov.uk. Office of Rail and Road. Retrieved 12 May 2018.
  3. ^ Multer, Jordan; Safar, Hadar; Roth, Emilie; France, Megan (June 2019). Why do Passenger Trains Pass Stop Signals – A Systems View (PDF) (Report). Washington, DC: Federal Railroad Administration. DOT/FRA/ORD-19/19. Archived (PDF) from the original on 18 May 2021. Retrieved 18 May 2021.
  4. ^ Hersman, Deborah. "Texting: Tomorrow's Unacceptable Behavior". National Transportation Safety Board. Archived from the original on 15 February 2017. Retrieved 11 September 2016.
  5. ^ a b "L_2014201EN.01000901.xml". eur-lex.europa.eu. Retrieved 20 September 2024. This article incorporates text from this source, which is available under the CC BY 4.0 license.